Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média de voltas para o tempo de corrida superior a +16.874 segundos e uma grade inferior a 5?
 ###Tabelas: CREATE TABLE doubles:_10_5–5 (doubles:_10_5–5_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE race (race_id AUTO_INCREMENT PRIMARY KEY, Driver VARCHAR, Team VARCHAR, Laps INT, Time/Retired VARCHAR, Grid INT, Points INT) CREATE TABLE censorship_by_country (censorship_by_country_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Region VARCHAR, FHFreepressreport VARCHAR, RWB Pressfreedomindex VARCHAR, Internetlists VARCHAR, ONIpoliticalfiltering VARCHAR, ONIsocialfiltering VARCHAR, ONIsecurityfiltering VARCHAR, ONItoolsfiltering VARCHAR) CREATE TABLE points_system (points_system_id AUTO_INCREMENT PRIMARY KEY, Distance VARCHAR, 10th INT, 11th INT, 12th INT, 13th INT, 14th INT, 15th INT, 16th INT, 17th INT, 18th INT, 19th INT, 20th INT, 21st INT, 22nd INT, 23rd INT, 24th INT, 25th INT, 26th INT, 27th INT, 28th INT, 29th INT, 30th INT, 31st INT, 32nd INT) CREATE TABLE —_southern_fells (—_southern_fells_id AUTO_INCREMENT PRIMARY KEY, Peak VARCHAR, Height (m) INT, Prom. (m) INT, Class VARCHAR, Parent VARCHAR)  
SELECT AVG Laps FROM race WHERE Time/Retired = +16.874 secs AND Grid < 5